Observation of a peaking structure in the J / ψ ϕ mass spectrum from B ± → J / ψ ϕ K ± decays
A peaking structure in the J/ψφ mass spectrum near threshold is observed in B ±→J/ψφK± decays, produced in pp collisions at √s=7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the dimuon decay mode of the J/ψ, corresponds to an integrated luminosity of 5.2...
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| Format: | Article |
| Language: | English |
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Elsevier BV
2021
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| Online Access: | https://hdl.handle.net/1721.1/133866 |
| _version_ | 1811084664202330112 |
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| author | The CMS Collaboration |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics The CMS Collaboration |
| author_sort | The CMS Collaboration |
| collection | MIT |
| description | A peaking structure in the J/ψφ mass spectrum near threshold is observed in B ±→J/ψφK± decays, produced in pp collisions at √s=7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the dimuon decay mode of the J/ψ, corresponds to an integrated luminosity of 5.2 fb-1. Fitting the structure to an S-wave relativistic Breit-Wigner lineshape above a three-body phase-space nonresonant component gives a signal statistical significance exceeding five standard deviations. The fitted mass and width values are m = 4148.0 ± 2.4 (stat.) ± 6.3 (syst.)MeV and Γ=28-11+15(stat.)±19(syst.)MeV, respectively. Evidence for an additional peaking structure at higher J/ψφ mass is also reported. © 2014 The Authors. |
| first_indexed | 2024-09-23T12:55:06Z |
| format | Article |
| id | mit-1721.1/133866 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:55:06Z |
| publishDate | 2021 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1338662023-01-05T21:11:06Z Observation of a peaking structure in the J / ψ ϕ mass spectrum from B ± → J / ψ ϕ K ± decays The CMS Collaboration Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science A peaking structure in the J/ψφ mass spectrum near threshold is observed in B ±→J/ψφK± decays, produced in pp collisions at √s=7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the dimuon decay mode of the J/ψ, corresponds to an integrated luminosity of 5.2 fb-1. Fitting the structure to an S-wave relativistic Breit-Wigner lineshape above a three-body phase-space nonresonant component gives a signal statistical significance exceeding five standard deviations. The fitted mass and width values are m = 4148.0 ± 2.4 (stat.) ± 6.3 (syst.)MeV and Γ=28-11+15(stat.)±19(syst.)MeV, respectively. Evidence for an additional peaking structure at higher J/ψφ mass is also reported. © 2014 The Authors. 2021-10-27T19:57:03Z 2021-10-27T19:57:03Z 2014 2019-05-10T12:40:38Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133866 Chatrchyan, S., et al. "Observation of a Peaking Structure in the J/?f Mass Spectrum from B�?J/?fk� Decays." Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 734 (2014): 261-81. en 10.1016/J.PHYSLETB.2014.05.055 Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics Creative Commons Attribution 3.0 unported license https://creativecommons.org/licenses/by/3.0/ application/pdf Elsevier BV Elsevier |
| spellingShingle | The CMS Collaboration Observation of a peaking structure in the J / ψ ϕ mass spectrum from B ± → J / ψ ϕ K ± decays |
| title | Observation of a peaking structure in the J / ψ ϕ mass spectrum from B ± → J / ψ ϕ K ± decays |
| title_full | Observation of a peaking structure in the J / ψ ϕ mass spectrum from B ± → J / ψ ϕ K ± decays |
| title_fullStr | Observation of a peaking structure in the J / ψ ϕ mass spectrum from B ± → J / ψ ϕ K ± decays |
| title_full_unstemmed | Observation of a peaking structure in the J / ψ ϕ mass spectrum from B ± → J / ψ ϕ K ± decays |
| title_short | Observation of a peaking structure in the J / ψ ϕ mass spectrum from B ± → J / ψ ϕ K ± decays |
| title_sort | observation of a peaking structure in the j ψ ϕ mass spectrum from b j ψ ϕ k decays |
| url | https://hdl.handle.net/1721.1/133866 |
| work_keys_str_mv | AT thecmscollaboration observationofapeakingstructureinthejpsphmassspectrumfrombjpsphkdecays |